delete	stdcamposvar
where	Tabela = 'Tecnicos'
		and Campo = 'CDU_Zona';
go

alter table Tecnicos drop column CDU_Zona;
go

delete	stdcamposvar
where	Tabela = 'Vendedores' 
		and Campo = 'CDU_Zona';
go

alter table Vendedores drop column CDU_Zona;
go